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Finding the Fourth Proportional to 78,023.51, 116,964.99 and 28,068.48

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Solution

The fourth proportional to 78,023.51, 116,964.99 and 28,068.48 is: 42,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023.51 : 116,964.99 = 28,068.48 : x
  2. Step 2: Convert to fraction form
    78,023.51/116,964.99 = 28,068.48/x
  3. Step 3: Cross multiply
    78,023.51x = 116,964.99 × 28,068.48
  4. Step 4: Simplify right side
    78,023.51x = 3,283,029,482.52
  5. Step 5: Solve for x
    x = 3,283,029,482.52/78,023.51
  6. Step 6: Final answer
    x = 42,077.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.